| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-performance coagulant-dispersed liquid having the specific properties of a cross-linkage type coagulant from a polymeric coagulant of powder with plenty of insoluble contents in dissolving, and to provide a sludge dehydrating method using it. SOLUTION: According to the production method of the polymeric-coagulant dispersed liquid, a 0.5 wt.% polymeric-coagulant solution of 500 g dissolved in a 4 wt.% brine is filtered by a 80 mesh sieve, in this filtering, at least a part of the polymeric coagulant having insoluble contents of 10 g or more on the sieve is changed to a swelling hydrous gel, and thereafter the gel is made to pass through a filtering member with the opening 10-500μm and is dispersed in water. The polymeric-coagulant dispersed liquid made by the production method and the sludge dehydrating method using the polymeric-coagulant dispersed liquid are provided. COPYRIGHT: (C)2007,JPO&INPIT |
